at once

Étymologie manquante ou incomplète. Si vous la connaissez, vous pouvez l’ajouter en cliquant ici.

at once \æt wʌns\

1. Aussitôt, immédiatement, sitôt, tout de suite, d’abord.
2. En même temps, à la fois.
   • Much of his past was unearthed, indeed, and all disreputable: tales came out of the man's cruelty, at once so callous and violent, of his vile life, of his strange associates, of the hatred that seemed to have surrounded his career; but of his present whereabouts, not a whisper. — (Robert Louis Stevenson, Strange Case of Dr Jekyll and Mr Hyde, 1885)